i) Estimate the directivity of the antenna. Assume that the aperture efficiency is 1 and that theconduction dielectric loss efficiency is also 1.ii) Compare the directivity value, calculated above, with the gain value given in the data sheet.What can we say about the total efficiency and aperture efficiency of this antenna? Consider a domestic satellite dish, shown in Figure 1. An extract from the data sheet for thesatellite dish is given below. Answer the questions below. Please show all working.DATA SHEETPhysicalReflector type OffsetDiameter (cm) 60.9 cmMaterial Fibre glassFigure 1: Domestic satellite dishLNB holder PlasticMast bracket diameter Ø 40-60 mmFinish Aluminium armDepth (mm) 129 mmLNB size Ø 40 mmTRIAXFrequency rangeFrequency range 10.7 - 12.75 MHzGainGain @ 12.625 GHz 36.0 dBiCharacteristicsX-polarisation >27 dB Offset angle 26 °Elevation range 10-55 ° Efficiency 70Noise temperature <35 °KBeamwidth / WindloadWindload @ 42 m/s 378 N

Answered: Image /qna-images/answer/11e7785f-c864-4deb-93fc-414271f72125.jpg

i) Estimate the directivity of the antenna. Assume that the aperture efficiency is 1 and that the conduction dielectric loss efficiency is also 1. ii) Compare the directivity value, calculated above, with the gain value given in the data sheet. What can we say about the total efficiency and aperture efficiency of this antenna?

i) Estimate the directivity of the antenna. Assume that the aperture efficiency is 1 and that the conduction dielectric loss efficiency is also 1. ii) Compare the directivity value, calculated above, with the gain value given in the data sheet. What can we say about the total efficiency and aperture efficiency of this antenna?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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